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Observation of the narrow state X(3872)-> J/psi pi(+)pi(-) in (p)over-barp collisions at root s=1.96 TeV

Acosta, D; Affolder, T; Ahn, MH; Akimoto, T; Albrow, MG; Ambrose, D; Amerio, S; ... CDF II Collaboration, .; + view all (2004) Observation of the narrow state X(3872)-> J/psi pi(+)pi(-) in (p)over-barp collisions at root s=1.96 TeV. PHYS REV LETT , 93 (7) , Article 072001. 10.1103/PhysRevLett.93.072001. Green open access

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Abstract

We report the observation of a narrow state decaying into J/psipi(+)pi(-) and produced in 220 pb(-1) of (p) over barp collisions at roots=1.96 TeV in the CDF II experiment. We observe 730+/-90 decays. The mass is measured to be 3871.3+/-0.7(stat)+/-0.4(syst) MeV/c(2), with an observed width consistent with the detector resolution. This is in agreement with the recent observation by the Belle Collaboration of the X(3872) meson.

Type: Article
Title: Observation of the narrow state X(3872)-> J/psi pi(+)pi(-) in (p)over-barp collisions at root s=1.96 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.93.072001
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.93.072001
Language: English
Additional information: The American Physical Society
Keywords: CDF, CHARMONIUM, RESONANCE, UPGRADE
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/153677
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